Problem: **Since the recent patch Sunqua fractal bosses known as Tiger and End Boss Lady are doing fire phase attacks that are completely or partially invisible making progress 'difficult' without boon misuse (Stability, Aegis) and lucky dodges/blocks all of which is frequently unsuccessful.
Regardless of graphics settings the issue is consistent and confirmed with other players in various parties. It is not a DX12 issue as that software is not installed.
**Detailed description: As the fire phase attacks begin, the spawn points for the shockwaves are partially visible but rendered incorrectly and the ground indicators are missing, then the shockwaves are invisible, and so are the rocks you are meant to hide behind. As the shockwaves pass the rocks suddenly appear but the ground indicators and animations for the actual firestorm explosion are not shown. The second attack is slightly more complete but still mostly missing visually.
Solution: fix it.