Petridisch Needs A Working Performance Laptop!

I am scheduled to play a show in Berlin on April 2nd with Barbara Morgenstern, one of my musical idols and also one of the flagship artists on my record label, Fish Prints. This is the listing for the show: https://www.silent-green.net/en/programme/singleview/cal/event/detail/2020/04/02/barbara-morgenstern/  While I have been building and practicing my intended set, the sound kept and keeps cutting out and hiccuping, clearly due to my current laptop (with an Intel i5 Core) simply not being able to handle what is needed of it for this performance.  In order to play trigger multiple full-WAV samples in live performance, I will need a stronger processor in order to be successful at this show. I have all my travel expenses covered, but not enough to purchase a new laptop in time for April 2nd. If I am able to get around $1000 for a new machine, I could play this once-in-a-lifetime opportunity without worry if the sound is going to fail. I obviously don't like asking for money on any platform or in any way, but right now it is necessary for 'the show to go on'.  Any help would be greatly, greatly appreciated - as stated above this is a once-in-a-lifetime opportunity that already has been cemented.  Thank you so much.