What about the GPU and VRAM? Also, 16GB can in fact be pretty limiting even if your game is 2D. Unreal’s a very demanding program and unless your project is really tiny, that low of RAM might cause momentary freezes, lags and even crashes sometimes! Think about this, when I have a browser, VS and Unreal all open at the same time, they consume 32GB already!(Windows stretches it’s legs depending on RAM capacity, but still!) So when you’re talking about crashes, that’s definitely something we should consider to be the culprit.
I really hope it’s not about hardware though, that really sucks because… there’s nothing you can do about that. Anyways, could you also provide your RAM and VRAM specs? Like capacity, speed, latency etc.