diff --git a/extra/sqtt/active_sqtt_parse.py b/extra/sqtt/active_sqtt_parse.py
index d4ba006abd..9682033ccd 100644
--- a/extra/sqtt/active_sqtt_parse.py
+++ b/extra/sqtt/active_sqtt_parse.py
@@ -37,7 +37,7 @@ def save_sqtt():
     if isinstance(e, ProfileSQTTEvent):
       print(replace(e, blob=b''))
       if e.se == 0:
-        parse_sqtt_print_packets(e.blob, filter=[0xf, 0x11, 0x12, 0x14, 0x16])
+        parse_sqtt_print_packets(e.blob, filter=[0xf, 0x11, 0x12, 0x14])
 
 
 template = """.text
@@ -88,10 +88,10 @@ def run_asm(src):
 if __name__ == "__main__":
   with save_sqtt() as sqtt:
     run_asm([
-      "v_rcp_f32 v1, v0"
-      #"v_add_f32_e32 v1 v0 v0",
+      #"v_rcp_f32 v1, v0"
+      "v_add_f32_e32 v1 v0 v0",
       #"v_add_f32_e32 v1 v0 v0",
       #"v_add_f32_e32 v3 v2 v2",
       #"v_add_f32_e32 v2 v1 v1",
       #"s_nop 1"
-    ]*1)
+    ]*10)
diff --git a/extra/sqtt/attempt_sqtt_parse.py b/extra/sqtt/attempt_sqtt_parse.py
index 423e363cde..996aeed964 100644
--- a/extra/sqtt/attempt_sqtt_parse.py
+++ b/extra/sqtt/attempt_sqtt_parse.py
@@ -1,7 +1,5 @@
 import pickle
-from hexdump import hexdump
 from extra.sqtt.roc import decode, ProfileSQTTEvent
-from tinygrad.helpers import getenv
 
 # Instruction packets (one per ISA op)
 # NOTE: these are bad guesses and may be wrong! feel free to update if you know better
@@ -467,18 +465,22 @@ def parse_sqtt_print_packets(data: bytes, max_tokens: int = 100000, filter=None)
       if two_bits == 1:
         flags |= 0x01
 
+      # Common 36-bit field at bits [12..47]
+      val36 = (reg >> 12) & ((1 << 36) - 1)
+
       if (reg & 0x200) == 0:
-        # delta mode: 36-bit delta at bits [12..47]
-        delta = (reg >> 12) & ((1 << 36) - 1)
+        # delta mode: add 36-bit delta to time
+        delta = val36
         time += delta
         note = "0x16-delta"
       else:
-        # marker mode if bit9==1 and bit8==0
-        if (reg & 0x100) == 0:
-          val = (reg >> 12) & ((1 << 36) - 1)
+        # marker / other modes: no time advance
+        if (reg & 0x100) == 0 and val36 != 0:
+          # real marker: bit9=1, bit8=0, non-zero payload
           delta = 0
-          note = f"0x16-marker val=0x{val:x}"
+          note = f"0x16-marker val=0x{val36:x}"
         else:
+          # "other" 0x16 variants, ignored for timing
           delta = 0
           note = "0x16-other"
     else:
diff --git a/test/unit/test_viz.py b/test/unit/test_viz.py
index 2facf85bef..36d69d1a44 100644
--- a/test/unit/test_viz.py
+++ b/test/unit/test_viz.py
@@ -5,7 +5,8 @@ from typing import Generator
 from tinygrad.uop.ops import UOp, UPat, Ops, PatternMatcher, TrackedPatternMatcher, graph_rewrite, track_rewrites, TRACK_MATCH_STATS, profile_matches
 from tinygrad.uop.symbolic import sym
 from tinygrad.dtype import dtypes
-from tinygrad.helpers import PROFILE, colored, ansistrip, flatten, TracingKey, ProfileRangeEvent, ProfileEvent, Context, cpu_events, profile_marker, VIZ
+from tinygrad.helpers import PROFILE, colored, ansistrip, flatten, TracingKey, ProfileRangeEvent, ProfileEvent, Context, cpu_events, profile_marker
+from tinygrad.helpers import VIZ
 from tinygrad.device import Buffer
 
 @track_rewrites(name=True)