diff --git a/src/dynarmic/backend/x64/emit_x64_floating_point.cpp b/src/dynarmic/backend/x64/emit_x64_floating_point.cpp
index 2994a91e..dfe834fa 100644
--- a/src/dynarmic/backend/x64/emit_x64_floating_point.cpp
+++ b/src/dynarmic/backend/x64/emit_x64_floating_point.cpp
@@ -1681,7 +1681,7 @@ void EmitX64::EmitFPFixedS32ToSingle(EmitContext& ctx, IR::Inst* inst) {
     const size_t fbits = args[1].GetImmediateU8();
     const FP::RoundingMode rounding_mode = static_cast<FP::RoundingMode>(args[2].GetImmediateU8());
 
-    if (rounding_mode == ctx.FPCR().RMode()) {
+    if (rounding_mode == ctx.FPCR().RMode() || ctx.HasOptimization(OptimizationFlag::Unsafe_IgnoreStandardFPCRValue)) {
         code.cvtsi2ss(result, from);
     } else {
         ASSERT(rounding_mode == FP::RoundingMode::ToNearest_TieEven);
@@ -1717,7 +1717,7 @@ void EmitX64::EmitFPFixedU32ToSingle(EmitContext& ctx, IR::Inst* inst) {
         }
     };
 
-    if (rounding_mode == ctx.FPCR().RMode()) {
+    if (rounding_mode == ctx.FPCR().RMode() || ctx.HasOptimization(OptimizationFlag::Unsafe_IgnoreStandardFPCRValue)) {
         op();
     } else {
         ASSERT(rounding_mode == FP::RoundingMode::ToNearest_TieEven);
diff --git a/src/dynarmic/backend/x64/emit_x64_vector_floating_point.cpp b/src/dynarmic/backend/x64/emit_x64_vector_floating_point.cpp
index 3952527b..84de2bf2 100644
--- a/src/dynarmic/backend/x64/emit_x64_vector_floating_point.cpp
+++ b/src/dynarmic/backend/x64/emit_x64_vector_floating_point.cpp
@@ -58,7 +58,7 @@ template<typename Lambda>
 void MaybeStandardFPSCRValue(BlockOfCode& code, EmitContext& ctx, bool fpcr_controlled, Lambda lambda) {
     const bool switch_mxcsr = ctx.FPCR(fpcr_controlled) != ctx.FPCR();
 
-    if (switch_mxcsr) {
+    if (switch_mxcsr && !ctx.HasOptimization(OptimizationFlag::Unsafe_IgnoreStandardFPCRValue)) {
         code.EnterStandardASIMD();
         lambda();
         code.LeaveStandardASIMD();
diff --git a/src/dynarmic/interface/optimization_flags.h b/src/dynarmic/interface/optimization_flags.h
index 143edc5c..df7eee3e 100644
--- a/src/dynarmic/interface/optimization_flags.h
+++ b/src/dynarmic/interface/optimization_flags.h
@@ -42,6 +42,9 @@ enum class OptimizationFlag : std::uint32_t {
     /// This is an UNSAFE optimization that causes floating-point instructions to not produce correct NaNs.
     /// This may also result in inaccurate results when instructions are given certain special values.
     Unsafe_InaccurateNaN = 0x00040000,
+    /// This is an UNSAFE optimization that causes ASIMD floating-point instructions to be run with incorrect
+    /// rounding modes. This may result in inaccurate results with all floating-point ASIMD instructions.
+    Unsafe_IgnoreStandardFPCRValue = 0x00080000,
 };
 
 constexpr OptimizationFlag no_optimizations = static_cast<OptimizationFlag>(0);