Like many I use an assortment of cars to grind Le Mans for credits but lately I've noticed that some of the VGT cars seem to become artificially top speed limited midway through the first or second lap (top speed drops to 160mph or so when they were driving normally earlier in the race). Apologies if this issue has already been addressed somewhere but I can't seem to find any info on it. Is this a common issue and can it be fixed?