why sometimes I hate swiftkey keyboard and prefer other input methods

1-swiftkey keyboard lags most of the times , I live in iran with filtering internet I have swype + Dragon keyboard too it is not lagging like swiftkey not at all You can install it from google play store

2-I can copy paste select all cut or scroll texts to up or down all these works can do by Swype+ Dragon keyboard see video shared I upload it in https://uploadfiles.io/ and after 30 days it would be deleted: