From c105dcb93c0e40187592497eb901ea774d3adf8c Mon Sep 17 00:00:00 2001
From: Elad <18193363+elad335@users.noreply.github.com>
Date: Sun, 21 Dec 2025 17:49:57 +0200
Subject: [PATCH] sysinfo.cpp: Relax TSC calibration constraints

---
 rpcs3/util/sysinfo.cpp | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/rpcs3/util/sysinfo.cpp b/rpcs3/util/sysinfo.cpp
index 94563e8d10..b1b97cd3cd 100755
--- a/rpcs3/util/sysinfo.cpp
+++ b/rpcs3/util/sysinfo.cpp
@@ -812,17 +812,23 @@ static const bool s_tsc_freq_evaluated = []() -> bool
 		}
 
 #ifdef _WIN32
-		LARGE_INTEGER freq;
+		LARGE_INTEGER freq{};
 		if (!QueryPerformanceFrequency(&freq))
 		{
 			return 0;
 		}
 
-		if (freq.QuadPart <= 9'999'999)
+		if (!freq.QuadPart)
 		{
 			return 0;
 		}
 
+		if (freq.QuadPart <= 50'000)
+		{
+			// Bad precision
+			return 0;
+		}
+
 		const ullong timer_freq = freq.QuadPart;
 #else
 
@@ -890,7 +896,7 @@ static const bool s_tsc_freq_evaluated = []() -> bool
 		const ullong sec_base = ts0.tv_sec;
 #endif
 
-		constexpr usz sleep_time_ms = 40;
+		const usz sleep_time_ms = timer_freq <= 300'000 ? (300'000 * 50) / timer_freq : 50;
 
 		for (usz sample = 0; sample < sample_count; sample++)
 		{