My Clash of Clans was lagging, but now...

After switching to a new smartphone and deleting apps from my old one, once I cleared over 25GB of free space, Clash of Clans, which used to lag, stopped lagging and started running smoothly. Even when deploying everything at TH18, it doesn't lag at all... It's a Huawei P30 lite with an AnTuTu score around 150,000.