Performance improvements

PerfectNumbers.Core/MersenneNumberDivisorByDivisorTester.cs

@@ -4,6 +4,7 @@ using System.Threading.Tasks;
 using System.Globalization;
 using System.Runtime.InteropServices;
 using PerfectNumbers.Core.Gpu.Accelerators;
+using PerfectNumbers.Core.Gpu;
 
 namespace PerfectNumbers.Core;
 
@@ -304,6 +305,7 @@ public static class MersenneNumberDivisorByDivisorTester
 
 						Console.WriteLine($"Task finished for range {rangeStart}");
 						Pow2MontgomeryAccelerator.DisposeAll();
+						GpuScratchBufferPool.DisposeAll();
 					},
 					CancellationToken.None,
 					TaskCreationOptions.DenyChildAttach,