The fact you are predominately gaming with the board you will be building doesn't make a difference one way or another when it comes to lubing your switches. For Linear switches that are decently smooth stock I personally prefer a thinner oil like Krytox VPF1415, GPL105 G00, GPL107 G00, etc (which all can work double duty as spring lube too). That's just me though, Krytox GPL205 G0 which a very thick (also hard to apply, need to go super light with it) Krytox grease seems to have become the community favorite lube for linear switches. I rarely use linear switches myself as I much prefer tactile switches, so I have yet to try 205 G0 on linears personally & couldn't say if it is superior to the oils I usually use with linears. If you want to go with a grease & are do not have any experience lubing switches yet, I would recommend to stay away from 205 G0 & go with Either Tribsys 3204 or 3203 as they are both very easy to work with.
