Elyse Betters Picaro / ZDNET Follow ZDNET: Add us as a preferred source on Google. ZDNET's key takeaways Restarting or power cycling a Roku can fix many lag issues. Updating or reinstalling apps can solve glitches and slowdowns. Test the network connection before blaming your Wi-Fi router. I own several Roku TVs and devices , including Roku soundbars and speakers. I love the platform for many reasons. But even I'll admit that, sometimes, my Roku acts up . I especially hate it when apps take a moment too long to load. Or a menu lags. When a screen hangs long enough that I start feeling like I want to chuck my remote at the TV, it's time to fix the problem. But first, what's going on here? Is it my Roku or my Wi-Fi? Also:  Every Roku user should know these 15+ shortcuts I know Roku devices can get bogged down by accumulating app data, glitchy apps, software updates, low memory, or the simple fact that they haven't been restarted in a while.…