Hmm, what's the evidence for the "frying" of processors? The heating issue in phones is mainly from the battery, not the processors. As for the lag, please see the response to your other post (resuming issue).
Every processor heats depending upon usage whether it is used by any Smartphone OS. But, I think Microsoft should design Lumia Smartphones to have low heating issues such that Heat upon usage can escape through some areas from phone. Also there is Resuming and Lagging issues in Lumia smartphones due to low quality of apps and app gap issues that Microsoft mobile should address. It would be very nice if Lumia
smartphones would have latest Snapdragon processors inside them rather than old processors
Microsoft Mobile should upgrade their smartphones with latest processors and specifications and tune the upcoming hardware with Windows 10 Mobile for best performance and make available all quality universal apps for Windows smartphones