diff --git a/Spice-SDK.md b/Spice-SDK.md
index cc57525..1e7ec94 100644
--- a/Spice-SDK.md
+++ b/Spice-SDK.md
@@ -2,6 +2,8 @@ Spice SDK is a flat C, header-only library that can be included in your hook DLL
 
 Once initialized, you can call directly into helper routines provided by Spicetools executable, making low-latency and high-throughput interactions possible.
 
+This is meant to be an alternative to writing applications over Spice API; as the API uses JSON objects over the network (or serial), there are issues with performance if you're trying to write a custom controller I/O module, for example.
+
 ## Instructions
 
 #### Include header files