--gpu-ration command-line argument added. AscendingDivisorRemainderStepper implemented in PrimeTester.IsPrimeCpu. PrimeOrderCalculator.RunOnCpu adjusted for low GPU ratios to prevent infinite increase of the counter.

PerfectNumbers.Core/Gpu/GpuPrimeWorkLimiter.cs

@@ -4,7 +4,7 @@ namespace PerfectNumbers.Core.Gpu;
 
 public static class GpuPrimeWorkLimiter
 {
-	private static readonly TimeSpan _pauseBetweenChecks = TimeSpan.FromSeconds(2);
+	private static readonly TimeSpan _pauseBetweenChecks = TimeSpan.FromSeconds(10);
 	private static PollingSemaphore _semaphore = new(1, _pauseBetweenChecks);
 	private static int _currentLimit = 1;