Re: Too Slow
If you've not given Wine another chance recently, you should consider doing so. It is by no means certain to work, especially if the code in question is buggy or uses some outré API call. But it's gradually gotten _much_ better, in my experience.
Though I can sympathize with the daunting nature of such a transfer. My mother was stuck on Windows for years because she needed to run a particular bit of payroll/accounting software for her husband's home business. Only solution was for him to retire. After he did that, Linux worked well for her. That solution is not open to everyone.
Biting the hand that feeds IT
