diff --git a/src/dynarmic/backend/arm64/address_space.cpp b/src/dynarmic/backend/arm64/address_space.cpp
index c555ce9b..766203a1 100644
--- a/src/dynarmic/backend/arm64/address_space.cpp
+++ b/src/dynarmic/backend/arm64/address_space.cpp
@@ -21,6 +21,8 @@ AddressSpace::AddressSpace(size_t code_cache_size)
         , mem(code_cache_size)
         , code(mem.ptr())
         , fastmem_manager(exception_handler) {
+    ASSERT_MSG(code_cache_size <= 128 * 1024 * 1024, "code_cache_size > 128 MiB not currently supported");
+
     exception_handler.Register(mem, code_cache_size);
     exception_handler.SetFastmemCallback([this](u64 host_pc) {
         return FastmemCallback(host_pc);
diff --git a/src/dynarmic/interface/A32/config.h b/src/dynarmic/interface/A32/config.h
index 33f6e194..a71dd03d 100644
--- a/src/dynarmic/interface/A32/config.h
+++ b/src/dynarmic/interface/A32/config.h
@@ -228,9 +228,9 @@ struct UserConfig {
     ///       in unusual behavior.
     bool always_little_endian = false;
 
-    // Minimum size is about 8MiB. Maximum size is about 2GiB. Maximum size is limited by
-    // the maximum length of a x64 jump.
-    size_t code_cache_size = 256 * 1024 * 1024;  // bytes
+    // Minimum size is about 8MiB. Maximum size is about 128MiB (arm64 host) or 2GiB (x64 host).
+    // Maximum size is limited by the maximum length of a x86_64 / arm64 jump.
+    size_t code_cache_size = 128 * 1024 * 1024;  // bytes
 };
 
 }  // namespace A32
diff --git a/src/dynarmic/interface/A64/config.h b/src/dynarmic/interface/A64/config.h
index 409e0048..390f3159 100644
--- a/src/dynarmic/interface/A64/config.h
+++ b/src/dynarmic/interface/A64/config.h
@@ -285,9 +285,9 @@ struct UserConfig {
     /// AddTicks and GetTicksRemaining are never called, and no cycle counting is done.
     bool enable_cycle_counting = true;
 
-    // Minimum size is about 8MiB. Maximum size is about 2GiB. Maximum size is limited by
-    // the maximum length of a x64 jump.
-    size_t code_cache_size = 256 * 1024 * 1024;  // bytes
+    // Minimum size is about 8MiB. Maximum size is about 128MiB (arm64 host) or 2GiB (x64 host).
+    // Maximum size is limited by the maximum length of a x86_64 / arm64 jump.
+    size_t code_cache_size = 128 * 1024 * 1024;  // bytes
 };
 
 }  // namespace A64