4-5 Sliding points may sound serious, but they are not so unusual at certain times of the market.With 0.01 lots, however, it should not be common.This makes me think that the problem is more related to your mobile connection than with the broker.The use of a VPS could reduce the problem if your strategy is mechanical, but for manual trading it will not make much difference.In any case, a good Internet connection is a necessary investment if you really take trading seriously.