It's not like a PC. On a PC I can choose to run games on low graphics. Or I can upgrade my system for a game I want to buy.
Here it's about a software that updates itself (or denies playing if I try to omit) and for basically no visibly nor explained reason has much worse performance and now...
I advanced to Global during Summer Event and was missing just two building upgrades to Industry max with ~178. Still very far from University max. at that level..
Well I would agree on the importance for research, but a base that looks weak still is being attacked. And losing 200/200 before defeating an enemy seems like a hard sacrifice to me.
I've had a similar problem with 5.7 update on Android. The game drained a lot of battery while in background, but reinstalling the app solved it for me.