>>363460550
The rule of thumb here is two steps removed/tangent to the topic at hand.
Of course it can exceed this as necessary but the farther it is from the main topic the less there should be of it.

Example:
VR game with guns > explanation of real life gun mechanism > recollection of that one time this gun mechanism affected something in your life

>>363460808
Hence we have sister threads like 
/vrlg/ = vr lewd general

Maybe it really is time to have a discussion if we should create a /vrog/ = vr off-topic general
Essentially a katawa shoujo like cancer general for a community like discussion