test: reduce sleep time in witness_script_test and bump precision for csv test

Author: delta1

test/functional/rpc_signrawtransaction.py

@@ -215,8 +215,8 @@ def witness_script_test(self):
         self.generate(self.nodes[0], COINBASE_MATURITY + 1, sync_fun=self.no_op)
         self.nodes[0].sendtoaddress(p2sh_p2wsh_address["address"], 49.999)
         self.generate(self.nodes[0], 1, sync_fun=self.no_op)
-        # ElEMENTS: allow environment time to settle
-        time.sleep(15)
+        # ElEMENTS: allow time for block sync
+        time.sleep(1)
         # Get the UTXO info from scantxoutset
         unspent_output = self.nodes[1].scantxoutset('start', [p2sh_p2wsh_address['descriptor']])['unspents'][0]
         spk = script_to_p2sh_p2wsh_script(p2sh_p2wsh_address['redeemScript']).hex()
@@ -283,7 +283,7 @@ def OP_1NEGATE_test(self):
     def test_signing_with_csv(self):
         self.log.info("Test signing a transaction containing a fully signed CSV input")
         self.nodes[0].walletpassphrase("password", 9999)
-        getcontext().prec = 8
+        getcontext().prec = 10
 
         # Make sure CSV is active
         assert self.nodes[0].getdeploymentinfo()['deployments']['csv']['active']