diff --git a/copyparty/__main__.py b/copyparty/__main__.py
index 99c2b9d1..1605d55b 100644
--- a/copyparty/__main__.py
+++ b/copyparty/__main__.py
@@ -1578,6 +1578,9 @@ def add_logging(ap):
     ap2.add_argument("--ihead", metavar="HEADER", type=u, action='append', help="print request \033[33mHEADER\033[0m; [\033[32m*\033[0m]=all")
     ap2.add_argument("--ohead", metavar="HEADER", type=u, action='append', help="print response \033[33mHEADER\033[0m; [\033[32m*\033[0m]=all")
     ap2.add_argument("--lf-url", metavar="RE", type=u, default=r"^/\.cpr/|[?&]th=[wjp]|/\.(_|ql_|DS_Store$|localized$)", help="dont log URLs matching regex \033[33mRE\033[0m")
+    ap2.add_argument("--scan-st-r", metavar="SEC", type=float, default=0.1, help="fs-indexing: wait \033[33mSEC\033[0m between each status-message")
+    ap2.add_argument("--scan-pr-r", metavar="SEC", type=float, default=10, help="fs-indexing: wait \033[33mSEC\033[0m between each 'progress:' message")
+    ap2.add_argument("--scan-pr-s", metavar="MiB", type=float, default=1, help="fs-indexing: say 'file: <name>' when a file larger than \033[33mMiB\033[0m is about to be hashed")
 
 
 def add_admin(ap):
diff --git a/copyparty/up2k.py b/copyparty/up2k.py
index f6536e30..4b999ba2 100644
--- a/copyparty/up2k.py
+++ b/copyparty/up2k.py
@@ -1499,6 +1499,7 @@ class Up2k(object):
 
         th_cvd = self.args.th_coversd
         th_cvds = self.args.th_coversd_set
+        scan_pr_s = self.args.scan_pr_s
 
         assert self.pp and self.mem_cur  # !rm
         self.pp.msg = "a%d %s" % (self.pp.n, cdir)
@@ -1711,7 +1712,7 @@ class Up2k(object):
             if nohash or not sz:
                 wark = up2k_wark_from_metadata(self.salt, sz, lmod, rd, fn)
             else:
-                if sz > 1024 * 1024:
+                if sz > 1024 * 1024 * scan_pr_s:
                     self.log("file: %r" % (abspath,))
 
                 try:
diff --git a/copyparty/util.py b/copyparty/util.py
index 271c5e93..476105e8 100644
--- a/copyparty/util.py
+++ b/copyparty/util.py
@@ -1121,16 +1121,18 @@ class ProgressPrinter(threading.Thread):
         sigblock()
         tp = 0
         msg = None
-        no_stdout = self.args.q
+        slp_pr = self.args.scan_pr_r
+        slp_ps = min(slp_pr, self.args.scan_st_r)
+        no_stdout = self.args.q or slp_pr == slp_ps
         fmt = " {}\033[K\r" if VT100 else " {} $\r"
         while not self.end:
-            time.sleep(0.1)
+            time.sleep(slp_ps)
             if msg == self.msg or self.end:
                 continue
 
             msg = self.msg
             now = time.time()
-            if msg and now - tp > 10:
+            if msg and now - tp >= slp_pr:
                 tp = now
                 self.log("progress: %r" % (msg,), 6)
 
diff --git a/tests/util.py b/tests/util.py
index 8c9831c8..ddbd6631 100644
--- a/tests/util.py
+++ b/tests/util.py
@@ -155,7 +155,7 @@ class Cfg(Namespace):
         ex = "gid uid"
         ka.update(**{k: -1 for k in ex.split()})
 
-        ex = "hash_mt hsortn qdel safe_dedup srch_time tail_fd tail_rate th_spec_p u2abort u2j u2sz unp_who"
+        ex = "hash_mt hsortn qdel safe_dedup scan_pr_r scan_pr_s scan_st_r srch_time tail_fd tail_rate th_spec_p u2abort u2j u2sz unp_who"
         ka.update(**{k: 1 for k in ex.split()})
 
         ex = "ac_convt au_vol dl_list du_iwho mtab_age reg_cap s_thead s_tbody tail_tmax tail_who th_convt ups_who ver_iwho zip_who"