This fine sawdust buildup on the wheels is sawdust that was not removed from the cut with the rest of the sawdust. Making the set larger and a larger hook angle will create more coarse sawdust the blade would remove during the cut. This does not completely eliminate the fine sawdust that freezes to everything during slower feed speeds in wintertime sawing.
The enemy of all saws when ripping lumber in cold weather is fine sawdust. The above methods are only treating the symptoms of the fine small sawdust and not eliminating it. Creating an every other tooth saw eliminates fine sawdust and all the problems acociated this condition.
Many mills would simply close down around me during the winter months because of this. Saw problems on top of saw problems.....wavy lumber off the band saws / thick and thin off of the head saws. Slowing down the speed of the saws to half speed would require changing pulleys, belts and a loss of horse power and not really practical. Altering the saw blades for frozen timber is very simple and practical solution.
I wish I could take credit for figuring all this out, but I can't. An old time sawmiller shared this with me and I found him to be correct, proved it throughout years of every day winter operations, it was like magic!
Just passing along some good advise for those on this site who may be experiencing issues with their mills during the winter months.