diff --git a/freqtrade/exchange/exchange.py b/freqtrade/exchange/exchange.py
index d3bbdf1e6..cea7f57ec 100644
--- a/freqtrade/exchange/exchange.py
+++ b/freqtrade/exchange/exchange.py
@@ -121,11 +121,12 @@ class Exchange:
         # Cache for 10 minutes ...
         self._cache_lock = Lock()
         self._fetch_tickers_cache: TTLCache = TTLCache(maxsize=2, ttl=60 * 10)
-        # Cache values for 1800 to avoid frequent polling of the exchange for prices
+        # Cache values for 300 to avoid frequent polling of the exchange for prices
         # Caching only applies to RPC methods, so prices for open trades are still
         # refreshed once every iteration.
-        self._exit_rate_cache: TTLCache = TTLCache(maxsize=100, ttl=1800)
-        self._entry_rate_cache: TTLCache = TTLCache(maxsize=100, ttl=1800)
+        # Shouldn't be too high either, as it'll freeze UI updates in case of open orders.
+        self._exit_rate_cache: TTLCache = TTLCache(maxsize=100, ttl=300)
+        self._entry_rate_cache: TTLCache = TTLCache(maxsize=100, ttl=300)
 
         # Holds candles
         self._klines: Dict[PairWithTimeframe, DataFrame] = {}
diff --git a/tests/exchange/test_exchange.py b/tests/exchange/test_exchange.py
index 7d3a54bc4..4f442b46b 100644
--- a/tests/exchange/test_exchange.py
+++ b/tests/exchange/test_exchange.py
@@ -2528,13 +2528,13 @@ def test_get_entry_rate(mocker, default_conf, caplog, side, ask, bid,
     assert exchange.get_rate('ETH/BTC', side="entry", is_short=False, refresh=True) == expected
     assert not log_has(log_msg, caplog)
 
-    time_machine.move_to(start_dt + timedelta(minutes=29), tick=False)
+    time_machine.move_to(start_dt + timedelta(minutes=4), tick=False)
     # Running a 2nd time without Refresh!
     caplog.clear()
     assert exchange.get_rate('ETH/BTC', side="entry", is_short=False, refresh=False) == expected
     assert log_has(log_msg, caplog)
 
-    time_machine.move_to(start_dt + timedelta(minutes=31), tick=False)
+    time_machine.move_to(start_dt + timedelta(minutes=6), tick=False)
     # Running a 2nd time - forces refresh due to ttl timeout
     caplog.clear()
     assert exchange.get_rate('ETH/BTC', side="entry", is_short=False, refresh=False) == expected
@@ -2571,13 +2571,13 @@ def test_get_exit_rate(default_conf, mocker, caplog, side, bid, ask,
     assert exchange.get_rate(pair, side="exit", is_short=False, refresh=False) == expected
     assert log_has(log_msg, caplog)
 
-    time_machine.move_to(start_dt + timedelta(minutes=29), tick=False)
+    time_machine.move_to(start_dt + timedelta(minutes=4), tick=False)
     # Caching still active - TTL didn't expire
     caplog.clear()
     assert exchange.get_rate(pair, side="exit", is_short=False, refresh=False) == expected
     assert log_has(log_msg, caplog)
 
-    time_machine.move_to(start_dt + timedelta(minutes=32), tick=False)
+    time_machine.move_to(start_dt + timedelta(minutes=6), tick=False)
     # Caching expired - refresh forced
     caplog.clear()
     assert exchange.get_rate(pair, side="exit", is_short=False, refresh=False) == expected