Graphical glitches in vents

Brief description of the issue

When moving through vents, especially quickly, parts of the screen will go black and the entirety of the pipeline will appear to be pipe adapters. During these occurrences, severe lagspikes also strike. It makes navigating vents nearly impossible.

What you expected to happen

A seamless, smooth experience,

What actually happened

I can't see and I jump 6 tiles at a time due to those lagspikes.

Steps to reproduce

1. Spawn as mouse or other animal with ventcrawling verb.
2. Alt-click on vent connected to pipeline.
3. Scurry down the pipe.
4. Observe.

Additional info:

• Server Revision: Found using the "Show Server Revision" verb under the OOC tab.
• Anything else you may wish to add: This also sometimes occurs without the pipe adapters.

[Leshana]

CNR. Are you using BYOND version 512.1418? Because that version broke sprites. Works fine in 512.1419