diff --git a/test/functional/test_runner.py b/test/functional/test_runner.py
--- a/test/functional/test_runner.py
+++ b/test/functional/test_runner.py
@@ -274,19 +274,8 @@
             if exclude_test + ".py" in test_list:
                 test_list.remove(exclude_test + ".py")
 
-    # Use and update timings from build_dir only if separate
-    # build directory is used. We do not want to pollute source directory.
-    build_timings = None
-    if (src_dir != build_dir):
-        build_timings = Timings(os.path.join(build_dir, 'timing.json'))
-
-    # Always use timings from scr_dir if present
-    src_timings = Timings(os.path.join(
-        src_dir, "test", "functional", 'timing.json'))
-
     # Add test parameters and remove long running tests if needed
-    test_list = get_tests_to_run(
-        test_list, TEST_PARAMS, cutoff, src_timings, build_timings)
+    test_list = get_tests_to_run(test_list, TEST_PARAMS)
 
     if not test_list:
         print("No valid test scripts specified. Check that your test is in one "
@@ -306,10 +295,10 @@
                                    "cache"), ignore_errors=True)
 
     run_tests(test_list, build_dir, tests_dir, args.junitouput,
-              config["environment"]["EXEEXT"], tmpdir, args.jobs, args.coverage, passon_args, build_timings, args.extended)
+              config["environment"]["EXEEXT"], tmpdir, args.jobs, args.coverage, passon_args, args.extended)
 
 
-def run_tests(test_list, build_dir, tests_dir, junitouput, exeext, tmpdir, num_jobs, enable_coverage=False, args=[], build_timings=None, run_extended=None):
+def run_tests(test_list, build_dir, tests_dir, junitouput, exeext, tmpdir, num_jobs, enable_coverage=False, args=[], run_extended=False):
     # Warn if bitcoind is already running (unix only)
     try:
         pidofOutput = subprocess.check_output(["pidof", "bitcoind"])
@@ -357,9 +346,6 @@
     print_results(test_results, max_len_name, runtime)
     save_results_as_junit(test_results, junitouput, runtime)
 
-    if (build_timings is not None):
-        build_timings.save_timings(test_results)
-
     if coverage:
         coverage.report_rpc_coverage()
 
@@ -563,24 +549,11 @@
     return list(python_files - set(non_scripts))
 
 
-def get_tests_to_run(test_list, test_params, cutoff, src_timings, build_timings=None):
+def get_tests_to_run(test_list, test_params):
     """
-    Returns only test that will not run longer that cutoff.
-    Long running tests are returned first to favor running tests in parallel
-    Timings from build directory override those from src directory
+    Returns all combinations of tests with testing flags
     """
 
-    def get_test_time(test):
-        if build_timings is not None:
-            timing = next(
-                (x['time'] for x in build_timings.existing_timings if x['name'] == test), None)
-            if timing is not None:
-                return timing
-
-        # try source directory. Return 0 if test is unknown to always run it
-        return next(
-            (x['time'] for x in src_timings.existing_timings if x['name'] == test), 0)
-
     # Some tests must also be run with additional parameters. Add them to the list.
     tests_with_params = []
     for test_name in test_list:
@@ -591,9 +564,7 @@
             tests_with_params.extend(
                 [test_name + " " + " ".join(p) for p in params])
 
-    result = [t for t in tests_with_params if get_test_time(t) <= cutoff]
-    result.sort(key=lambda x:  (-get_test_time(x), x))
-    return result
+    return tests_with_params
 
 
 class RPCCoverage():
@@ -701,52 +672,5 @@
         file_name, "UTF-8", xml_declaration=True)
 
 
-class Timings():
-    """
-    Takes care of loading, merging and saving tests execution times.
-    """
-
-    def __init__(self, timing_file):
-        self.timing_file = timing_file
-        self.existing_timings = self.load_timings()
-
-    def load_timings(self):
-        if os.path.isfile(self.timing_file):
-            with open(self.timing_file) as f:
-                return json.load(f)
-        else:
-            return []
-
-    def get_merged_timings(self, new_timings):
-        """
-        Return new list containing existing timings updated with new timings
-        Tests that do not exists are not removed
-        """
-
-        key = 'name'
-        merged = {}
-        for item in self.existing_timings + new_timings:
-            if item[key] in merged:
-                merged[item[key]].update(item)
-            else:
-                merged[item[key]] = item
-
-        # Sort the result to preserve test ordering in file
-        merged = list(merged.values())
-        merged.sort(key=lambda t, key=key: t[key])
-        return merged
-
-    def save_timings(self, test_results):
-        # we only save test that have passed - timings for failed test might be
-        # wrong (timeouts or early fails)
-        passed_results = [t for t in test_results if t.status == 'Passed']
-        new_timings = list(map(lambda t: {'name':  t.name, 'time': t.time},
-                               passed_results))
-        merged_timings = self.get_merged_timings(new_timings)
-
-        with open(self.timing_file, 'w') as f:
-            json.dump(merged_timings, f, indent=True)
-
-
 if __name__ == '__main__':
     main()
diff --git a/test/functional/timing.json b/test/functional/timing.json
deleted file mode 100644
--- a/test/functional/timing.json
+++ /dev/null
@@ -1,363 +0,0 @@
-[
- {
-  "name": "abandonconflict.py",
-  "time": 17
- },
- {
-  "name": "abc-checkdatasig-activation.py",
-  "time": 3
- },
- {
-  "name": "abc-cmdline.py",
-  "time": 8
- },
- {
-  "name": "abc-finalize-block.py",
-  "time": 4
- },
- {
-  "name": "abc-high_priority_transaction.py",
-  "time": 6
- },
- {
-  "name": "abc-magnetic-anomaly-activation.py",
-  "time": 6
- },
- {
-  "name": "abc-mempool-accept-txn.py",
-  "time": 3
- },
- {
-  "name": "abc-p2p-compactblocks.py",
-  "time": 273
- },
- {
-  "name": "abc-p2p-fullblocktest.py",
-  "time": 62
- },
- {
-  "name": "abc-parkedchain.py",
-  "time": 17
- },
- {
-  "name": "abc-replay-protection.py",
-  "time": 4
- },
- {
-  "name": "abc-rpc.py",
-  "time": 2
- },
- {
-  "name": "abc-transaction-ordering.py",
-  "time": 6
- },
- {
-  "name": "assumevalid.py",
-  "time": 17
- },
- {
-  "name": "bip65-cltv-p2p.py",
-  "time": 6
- },
- {
-  "name": "bip68-112-113-p2p.py",
-  "time": 15
- },
- {
-  "name": "bip68-sequence.py",
-  "time": 32
- },
- {
-  "name": "bipdersig-p2p.py",
-  "time": 6
- },
- {
-  "name": "bitcoin_cli.py",
-  "time": 4
- },
- {
-  "name": "blockchain.py",
-  "time": 19
- },
- {
-  "name": "dbcrash.py",
-  "time": 1292
- },
- {
-  "name": "decodescript.py",
-  "time": 2
- },
- {
-  "name": "deprecated_rpc.py",
-  "time": 2
- },
- {
-  "name": "disablewallet.py",
-  "time": 2
- },
- {
-  "name": "disconnect_ban.py",
-  "time": 6
- },
- {
-  "name": "example_test.py",
-  "time": 16
- },
- {
-  "name": "fundrawtransaction.py",
-  "time": 40
- },
- {
-  "name": "getblocktemplate_longpoll.py",
-  "time": 69
- },
- {
-  "name": "getchaintips.py",
-  "time": 4
- },
- {
-  "name": "httpbasics.py",
-  "time": 17
- },
- {
-  "name": "import-rescan.py",
-  "time": 18
- },
- {
-  "name": "importmulti.py",
-  "time": 11
- },
- {
-  "name": "importprunedfunds.py",
-  "time": 5
- },
- {
-  "name": "invalidateblock.py",
-  "time": 8
- },
- {
-  "name": "invalidblockrequest.py",
-  "time": 5
- },
- {
-  "name": "invalidtxrequest.py",
-  "time": 15
- },
- {
-  "name": "keypool-topup.py",
-  "time": 34
- },
- {
-  "name": "keypool.py",
-  "time": 7
- },
- {
-  "name": "listsinceblock.py",
-  "time": 24
- },
- {
-  "name": "listtransactions.py",
-  "time": 23
- },
- {
-  "name": "maxuploadtarget.py",
-  "time": 28
- },
- {
-  "name": "mempool_limit.py",
-  "time": 8
- },
- {
-  "name": "mempool_packages.py",
-  "time": 55
- },
- {
-  "name": "mempool_persist.py",
-  "time": 19
- },
- {
-  "name": "mempool_reorg.py",
-  "time": 6
- },
- {
-  "name": "mempool_resurrect_test.py",
-  "time": 2
- },
- {
-  "name": "mempool_spendcoinbase.py",
-  "time": 5
- },
- {
-  "name": "merkle_blocks.py",
-  "time": 32
- },
- {
-  "name": "minchainwork.py",
-  "time": 6
- },
- {
-  "name": "mining.py",
-  "time": 5
- },
- {
-  "name": "multi_rpc.py",
-  "time": 18
- },
- {
-  "name": "multiwallet.py",
-  "time": 20
- },
- {
-  "name": "net.py",
-  "time": 13
- },
- {
-  "name": "notifications.py",
-  "time": 6
- },
- {
-  "name": "nulldummy.py",
-  "time": 5
- },
- {
-  "name": "p2p-acceptblock.py",
-  "time": 14
- },
- {
-  "name": "p2p-compactblocks.py",
-  "time": 22
- },
- {
-  "name": "p2p-feefilter.py",
-  "time": 51
- },
- {
-  "name": "p2p-fullblocktest.py",
-  "time": 148
- },
- {
-  "name": "p2p-leaktests.py",
-  "time": 8
- },
- {
-  "name": "p2p-mempool.py",
-  "time": 3
-
- },
- {
-  "name": "p2p-timeouts.py",
-  "time": 64
- },
- {
-  "name": "preciousblock.py",
-  "time": 3
- },
- {
-  "name": "prioritise_transaction.py",
-  "time": 34
- },
- {
-  "name": "proxy_test.py",
-  "time": 3
- },
- {
-  "name": "pruning.py",
-  "time": 1511
- },
- {
-  "name": "rawtransactions.py",
-  "time": 16
- },
- {
-  "name": "receivedby.py",
-  "time": 37
- },
- {
-  "name": "reindex.py",
-  "time": 18
- },
- {
-  "name": "resendwallettransactions.py",
-  "time": 18
- },
- {
-  "name": "rest.py",
-  "time": 20
- },
- {
-  "name": "rpcbind_test.py",
-  "time": 28
- },
- {
-  "name": "rpcnamedargs.py",
-  "time": 2
- },
- {
-  "name": "sendheaders.py",
-  "time": 16
- },
- {
-  "name": "signmessages.py",
-  "time": 3
- },
- {
-  "name": "signrawtransactions.py",
-  "time": 2
- },
- {
-  "name": "txn_clone.py",
-  "time": 8
- },
- {
-  "name": "txn_clone.py --mineblock",
-  "time": 6
- },
- {
-  "name": "txn_doublespend.py",
-  "time": 7
- },
- {
-  "name": "txn_doublespend.py --mineblock",
-  "time": 7
- },
- {
-  "name": "uptime.py",
-  "time": 2
- },
- {
-  "name": "wallet.py",
-  "time": 34
- },
- {
-  "name": "wallet_accounts.py",
-  "time": 5
- },
- {
-  "name": "wallet_dump.py",
-  "time": 6
- },
- {
-  "name": "wallet_encryption.py",
-  "time": 8
- },
- {
-  "name": "wallet_hd.py",
-  "time": 54
- },
- {
-  "name": "wallet_receivedby.py",
-  "time": 9
- },
- {
-  "name": "walletbackup.py",
-  "time": 116
- },
- {
-  "name": "zapwallettxes.py",
-  "time": 10
- },
- {
-  "name": "zmq_test.py",
-  "time": 9
- }
-]
\ No newline at end of file