diff --git a/runtime/metal/DeviceCapabilities.cpp b/runtime/metal/DeviceCapabilities.cpp
index edd20f2..defa640 100644
--- a/runtime/metal/DeviceCapabilities.cpp
+++ b/runtime/metal/DeviceCapabilities.cpp
@@ -21,7 +21,8 @@ std::optional<std::string> DeviceCapabilities::validationError() const {
         return "recommended_working_set_exceeds_physical_memory";
     }
     if (!maxBufferLengthBytes) return "max_buffer_length_unavailable";
-    if (appleGpuFamily < kMinimumAppleGpuFamily) return "apple_gpu_family_9_required";
+    // HACK(initialed85): attempting to add support for M2 Max
+    if (appleGpuFamily < kMinimumAppleGpuFamily) return "apple_gpu_family_8_required";
     if (maxThreadgroupMemoryBytes < 32 * 1024) {
         return "threadgroup_memory_below_32_kib";
     }
diff --git a/runtime/metal/DeviceCapabilities.hpp b/runtime/metal/DeviceCapabilities.hpp
index 8919c0c..5460a29 100644
--- a/runtime/metal/DeviceCapabilities.hpp
+++ b/runtime/metal/DeviceCapabilities.hpp
@@ -16,7 +16,8 @@ struct DeviceCapabilities {
     uint32_t macosMinor = 0;
     uint32_t macosPatch = 0;
     // Highest supported MTLGPUFamilyAppleN.
-    static constexpr uint32_t kMinimumAppleGpuFamily = 9;
+    // HACK(initialed85): attempting to add support for M2 Max
+    static constexpr uint32_t kMinimumAppleGpuFamily = 8;
     uint32_t appleGpuFamily = 0;
     // IORegistry gpu-core-count; zero means unavailable. Kernel policy then
     // assumes a large GPU when choosing parallelism.
diff --git a/runtime/model/Runtime.mm b/runtime/model/Runtime.mm
index 52d48cb..b873793 100644
--- a/runtime/model/Runtime.mm
+++ b/runtime/model/Runtime.mm
@@ -42,7 +42,8 @@
 // Fixed reserves the memory plan carries beside the planned arenas: Metal
 // pipeline objects and encoder scratch, and the process's own runtime overhead.
 constexpr uint64_t kPipelineReserveBytes = 256ULL << 20;
-constexpr uint64_t kRuntimeOverheadReserveBytes = 512ULL << 20;
+// HACK(initialed85): trying to add support for M2 Max
+constexpr uint64_t kRuntimeOverheadReserveBytes = 768ULL << 20;
 
 using metal::BufferStorage;
 using metal::CommandGraph;