sometimes:
1. Lower settings - I play on medium/high, but my PC could handle Ultra easilly.
2. Avoid some maps - some maps cause crashes very often. Like Lyon (6).
3. Avoid huge maps - huge maps like Rhine cause serious problems.
4. Avoid calli spam - massive barrage of calliope can cause long lags, but when firing 2 or more it causes crash. Or it's mine PC